Sprocket chain



' 1,642,459 Sept. 13, 1927. J S ORR 4 SPROCKET CHAIN Filed-Jan. 5. 1927 2 Sheets-Sheet 1 J. S. ORR

SPROCKET CHAIN Filed Jan. 5, 1927 2 Sheets-Sheet 2 Elsa;

Jbllrl/ S: OPP ilnucm'oz Q. Z 15% I I V I a Patented Sept. 13, 1927.

. JOHN STEVENS ORR, F AUGUSTAQKENTUCKY. i

SPROCKET CHAIN.

Application filed January 3, 1927. Serial No.158,653. T

Thisinvention aims to provide a sprocket chain so constructed that it will neither sag 10 for marine propulsion; Figure 2 is a top plan showing several chains assembled to form the structure delineated in Figure 1; Figure 3 is a side view showing several of the connected links; Figure 4 is a plan of the links depicted in Figure 3; Figure 5 is an elevation of one of the links; Figure 6 is a perspective View of the link; Figure 7 is an elevation showinga driving mechanism made up of devices, constructed in ac cordance with the invention; Figure 8 is a v perspective view showing one of the paddles and attendant parts; Figure 9 is a side view showing a modified form of chain; Figure 10 is a plan of the chain depicted in Figure ot' the links used in making the chain of Figures 9 and 10,

Referring to Figures 5 and 6,]there is shown a link 1 comprising a body 2 promerging into an enlarged disk-like head at having an'opening 5, there beingoppositely disposed recesses 6 in that end of the body 2 which is remote from the head l, theorecesses 6 opening through the end of the body 2, longitudinally thereof. The body 2' is provided at one side, and at a point intermediate its ends, with spaced transverse ears 7 having openings 8. On its opposite side, the body 2 of the link l'has a lug 9 provided with an opening 10. The lug 9 of one link is adaptedto fit between the ears 7 of an adjoining link, and a pivot element 11 is engaged in the openin s 10 and 8, the resulting structure being ac ain of the sort shown in Figures 3 and 4. The heads at of adjoining links abut as shown at 12, and therefore, the chain cannot sag. The teeth of the sprocket wheel are received in the recesses 6, between the extremities 14 of the bodies 2 of adjoining links, and movement is imparted to the sprocket chain, from the sprocket wheel, without. the wear and tear 9; Figure 11 is an elevation showing one vided at. one end with, a: reduced neck 3.

whichoccurs when the tooth of a sprocket wheel engages within the opening in a 0 sprocket chain of ordlnary construction. The

recesses 6 in the sides of the link 1 prevent relative lateral movement between the chain and the sprocket wheel.

In Figures 9, 10 and 11, parts hereinbefore described have been designated by numerals previously used with the suffix a. The modification consists in fashioning the heads 4* ofthe linksof angular form, rather than of circular form, as shown in Figure 3. v If the chain be employed in marine propulsion, any desired number of chains, lo-

cated side by side, are mounted on sprocket wheels 15 carried by shafts 16 journaled in bearings 17 on a boat 18, one of the'shafts 16 having cranks 19 connected by pitmans 20 with the cranks'2l (Figure. 1) of an engine 22 on the boat. Rods 23 or like sup-. ports are mounted in the openings 5 that are formed in the heads I of the links 1, the rods 23 connecting the several chains, in a way which will be understood readily from Figure 8. Hangers 24 are mounted to swing on one of the rods 23 and are secured to-paddles 25 provided with cross pieces 26 sustained by braces 27 the cross pieces 26 resting on adjoining rods 23 and steadying the paddles whilst they are in working position, the paddles featheringes they pass around the outermost sprocket wheels 15.

What is claimed is f 1 1. A sprocket chain comprising links, each having abody provided at one end with a reduced neck having an enlarged head, the

body being provided at its other end with oppositely disposed recesses, the link being supplied intermediate its ends with oppositely extended projections having pivot openings, the projections of adjoining links being overlapped upon each other to bring the openings into registration, and pivot elements in the openings, the head of one link being in abutment at itsedge with the head of an adjoining link.

2. In adevice of the class described, a plurality of sprocket chains located side by side, each sprocket chain being made up of links, and each link comprising a body provided at one end with a reduced neck having an enlarged head, the head being supplied with an aperture, the body being 2 ,omti nio provided at its other and with oppositely olelnents mounted. in the openings, and coniiisposod lwossos, tho link being supplied HGCfiUIlS joining tho chains, the connections inioi-nmrfiizn'o its oniis with oppositely oxmnioii nojooiioint having pivot; openings, in testimony flint I claim tho foregoing ho pl-ojooiion of one iink being overlapped as my own, I have horolo :ifiixed my signaon [ho proiowiion oi :in adjoining link to (1W0.

living; {in openings inio 1'ogisi lniiion, pivot JOHNWIEVENS ()IHH.

lining ll'lOlHliOd in the :LPOPHIYGS oi the hoods. Q 

